Plow attachment.



J. A. MARTIN.

PLOW ATTACHMENT. APPLICATION map FEB.10.'19|6.

l 1 83,999; Patented May 23,1916.

Ji /42m I 0 all whom it mdy concern: 1 Be it known that 1, JOHN citizenof the United States, residing at OKLAHOMA, AS SICi-NORI O ONE-HALF TOK. "K, BLACK, 0]? IDABEL, OKLAHOMA.

JOHN'- A. MARTIN, 0F IDABEL,

PLOW ATTACHMENT.

Application filed February 10. 1916. Serial No. 77,483.

A. MARTIN, a

.iidabel, in the county of McCurtain and State of Oklahoma, haveinvented a new and useful Plow Attachment, of which the following is aspecification.

This invention relates to cultivators and like agricultural implements,one of the 0b-,'

jects of the invention being toprovide means whereby a soil device ofany des red construction such as a plow, colter, or the like,

' may he adjustably connected to a beam so AB Fig. 2. Fig

as to he held ,at different angles relati've thereto, the connectingmeans being such as to permit quick and accurate adjustment, insurestability and enable the .beam to be used in connection with variouskinds of soil engaging devices.

\Vith the foregoing and other objects in view which will appear as thedescription proceeds, the invention residesin the combination andarrangement of parts and in the details of construction hereinafterdescribed and cl aimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, can be made within thescope of what is claimed, without ..epai-ting from the spirit of theinvention.

In the accompany ng drawings the preferred form of the invention hasbeen shown.

In said drawings :'Figure 1 is a side ele- -vation' of a harrowembodying the present improvements. Fig. 2 is a plan view thereof. Fig.3 is an enlarged section on line 4 is a section on line C-D Fig. 1, thestandard being' shown in elevation. Fig. 5 is an enlarged transversesection through a portion of the harrow, said section being taken on theline EF Fig. 2.

Referring to the figures by characters of reference 1 designates a beamhaving handlcs connected to one end thereof. Formed within the rearportion of the beam is a slot 3 extending entirely through the beam fromthe top to the bottom thereof, the rear wall of the slot being concavedfrom top to bottom "as shown at 4, while thefront wall thereof ispreferably straight as shown at and merges into a supporting lip orflange 6 extending rearwardly at the bottom of the slot. The slot 3 isdesigned to receive a block 7 one endof which is rounded, as shown at 8so as to fit snugly against the concavedrwall 4. The other end islikewise Specification of Letters Patent.

g opening is designed to receive a standard 11.

'from the beam. The front arms of'each -pair are pivotally connected tothe beam by a bolt 20 extending through the beam.

Connected to the rear arms 19 are studs 22 ends of the spring stripspreferred, a plow can be connected to the Patented Ha es, 1910.

rounded, as shown at 9 and is adapted to engage the flange 6 and thefront. wall 5 of the slot. i I

Extending through the block 7 from top to bottom thereof is an opening10 and this This standard can be one of several kinds. For example, andas shown in Fig.1, it can be provided, at its lower end with a fork 12in which awheel 13 is journaled or, if

standard. In order to prevent the standard from shifting upwardly withinthe block, a block 1% is extended therearound andbears upwardly againstthe beam 1,.this block being attached to the standard by means of a setscrew 15. Said block, in the present instance,'has a rearwardlyextending tongue 16' on which iss'ecured the front end of a spring 17which curves downwardly and forwardly and is provided with a harrow orcultivator blade 18. Obviously movement upwardly of the standardrelative to the beam 1 will be limited by the block 14:. How v ever, byloosening the set screw 15 standard 11 can be adjusted longitudinallyand then by tightening the set screw the standard will be held againstupward movement after such adjustment.

In the structure shown the harrow has been combined with the beam 1 andthe standard 11. This harrow consists of pairs of arms 19 extended inopposite directions while the rear arms 19 are connected tov the beam.by a bolt 21 extending therethrough.

extending upwardly from sleeves 23, the studs being screw sleeves closeto the arms 19. Extending through these sleeves are parallel springstrips 2 the rear ends of whichare curved downwardly and forwardly andprovided with soil engaging devices 25. The front the front ends of thearms-19 by pivot bolts 26. The outer ends of the arms 19 are connectedto side links 27- which cooperate with beam 1 to form parallelograms.

Secured to each. of the front arms 19 close to the sides of the beam 1are holding strips 28 each of which is provided, in its front endportion, with a longitudinal series of threaded so as to hold the v areconnected to openings 29. A bolt 30 is extended transversely through thebeam 1 and is adapted to extend through any one of the openings 29 ineach of the strips 28. Thus it will be seen that by 'removing bolt30the-strip 28 can beadjusted longitudinally, thus" to swing the arms 19outwardly or inwardly relative to the beam 1 and to. correspondinglyshift ,the strips 24 awayfrom or toward each other. After the bolt 30has been inserted through the strips 28 and secured, the arms v 19 willbe held securely against movement relatively to the beam 1.

-By providing the particular connection between 7 the standard. 11 andthe beam 1,

the said-standard can be adjusted angularlyby shifting thefblock'?within the slot with-After jsuchshifting the block can be held bymeansof a set screw 31 inserted into one side of :the beam and engaging one gside of the block as shown inFigs-l and 2.

. of standards 11.'

,Obviously blocks having-openings of dif- 'ferent sizes can beplaced inthe-slot 3 for the-purpose of: accommodating different sizes In anyevent prex'ure will be transmitted directly from the standard to theblock and from the block against the concave wall 4 ofthe'slo'tso thatthere i are. no bolts likely to become broken or Jtwisted as a result:of excessive pressure.

Instead the pressure. is transmitted directly from the standard to thebeam.

.in the slot, a flange:

the block, means What is claimed ,is: y

1. In an implement of the class described, a beam having a slotextending therethrough from top to bottom thereof, a block adjustablymounted in the slot and bearin rearwardly against the rear wall thereomeans forholding the block against angular adjustment, a standardextending through and movable with the block, and a soil engaging devicecarried by the standard.

2. An agricultural implement including a beam havi g a slot extendingtherethrough from top to bottomthereof, a block seated normallysupporting one end of the block, said slot having 'a concaved wall forthe reception of one end of for holding the, block against movementupwardly and downwardly relative to thebeam, a standard-extendingthrough the block and adjustable longitudinally therein, means carriedby the standardand-coiiperating with the beam rfor li'miting the'upward'movement ofthe standard relative to the blockfand a soil engagingdevi'ce carried by the standard.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

i JOHN A. MARTIN.

Witnesses:

'FRED B. MITCHELL, FRANK LAMB.

